Sha256: 397651e68092230193a61e93e62423169958af2aab853cbcef86a9e94e20abcd
Contents?: true
Size: 1.88 KB
Versions: 19
Compression:
Stored size: 1.88 KB
Contents
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = loadBlockHoistPlugin;
function _traverse() {
const data = require("@babel/traverse");
_traverse = function () {
return data;
};
return data;
}
var _plugin = require("../config/plugin.js");
let LOADED_PLUGIN;
const blockHoistPlugin = {
name: "internal.blockHoist",
visitor: {
Block: {
exit({
node
}) {
node.body = performHoisting(node.body);
}
},
SwitchCase: {
exit({
node
}) {
node.consequent = performHoisting(node.consequent);
}
}
}
};
function performHoisting(body) {
let max = Math.pow(2, 30) - 1;
let hasChange = false;
for (let i = 0; i < body.length; i++) {
const n = body[i];
const p = priority(n);
if (p > max) {
hasChange = true;
break;
}
max = p;
}
if (!hasChange) return body;
return stableSort(body.slice());
}
function loadBlockHoistPlugin() {
if (!LOADED_PLUGIN) {
LOADED_PLUGIN = new _plugin.default(Object.assign({}, blockHoistPlugin, {
visitor: _traverse().default.explode(blockHoistPlugin.visitor)
}), {});
}
return LOADED_PLUGIN;
}
function priority(bodyNode) {
const priority = bodyNode == null ? void 0 : bodyNode._blockHoist;
if (priority == null) return 1;
if (priority === true) return 2;
return priority;
}
function stableSort(body) {
const buckets = Object.create(null);
for (let i = 0; i < body.length; i++) {
const n = body[i];
const p = priority(n);
const bucket = buckets[p] || (buckets[p] = []);
bucket.push(n);
}
const keys = Object.keys(buckets).map(k => +k).sort((a, b) => b - a);
let index = 0;
for (const key of keys) {
const bucket = buckets[key];
for (const n of bucket) {
body[index++] = n;
}
}
return body;
}
0 && 0;
//# sourceMappingURL=block-hoist-plugin.js.map
Version data entries
19 entries across 15 versions & 2 rubygems